Javacript sorting object

Question

Hello! I have a js object (name, noWords, score, group)

flower - 1 - 88 - 0
flower - 1 - 99 - 0
flower,spring - 2 - 39 - 1
flower,spring - 2 - 58 - 1
flower,time - 2 - 20 - 2
flower,time - 2 - 53 - 2
spring,time - 2 - 55 - 3
flower,spring,time - 3 - 79 - 4
flower,spring,time - 3 - 121 - 4

I want to sort this object like this first matter the number of words - it's made then if there are more groups with the same number of words to sort by greater value of each group

Expected result

flower - 1 - 88 - 0
flower - 1 - 99 - 0
flower,time - 2 - 20 - 2
flower,time - 2 - 53 - 2
spring,time - 2 - 55 - 3
flower,spring - 2 - 39 - 1
flower,spring - 2 - 58 - 1
flower,spring,time - 3 - 79 - 4
flower,spring,time - 3 - 121 - 4

Answer 1

First of all you mean Array. You can't sort an Object.

What you need is to perform an user sort. To do this you use the Array.sort() method along with a custom sorting function. In that function you put you comparison algorithm.

Simple example:

myArray = [5, 3, 7, 9];
myArray.sort(function(a, b){
    if(a > b)
        return -1; // negative means that the elements are not in the right order and should be switched
    else
        return 1; // positive means that the element are in the desired order
});

The sort method does all the sorting for you but you have to provide the means of comparing any two elements.

Answer 2

assuming your objects are in an array, you can use a custom sort method for comparing two entries.

var myObjects = [ /* assuming this is filled. */ ];

myObjects.sort(function (a, b) {

    // a and b will be two instances of your object from your list

    // possible return values
    var a1st = -1; // negative value means left item should appear first
    var b1st =  1; // positive value means right item should appear first
    var equal = 0; // zero means objects are equal

    // compare your object's property values and determine their order
    if (b.noWords < a.noWords) {
        return b1st;
    }
    else if (a.noWords < b.noWords) {
        return a1st;
    }

    // noWords must be equal on each object
    if (b.group < a.group) {
        return b1st;
    }
    else if (a.group < b.group) {
        return a1st;
    }

    // group must be equal
    // TODO continue checking until you make a decision

    // no difference between objects
    return equal;
});

Your description of how you want things ordered is unclear so I'll leave that part up to you.